Metal luggage system, particularly aluminum

Abstract

The present invention relates to a piece of luggage (100) comprising two metal half-shells, in particular made of aluminum or aluminum alloy, obtained by stamping, each half-shell being a single piece, having a base and a peripheral wall, defining an internal volume, and an upper edge corresponding to the peripheral edge of the peripheral wall, the upper edge receiving a curved frame (10, 10') having a flat portion bonded to an inner portion of the peripheral wall, near the upper edge, the curved frame (10, 10') projecting beyond the upper edge, upwards, that is to say in a direction opposite to the base. Abstract figure: Figure 3

Description

Title of the invention: Metal luggage system, particularly made of aluminum. Technical field

[0001] The present invention relates to the field of metal luggage, in particular aluminum or aluminum alloy luggage. STATE OF THE ART

[0002] There are many types of luggage, made of plastic (molded, thermoformed, or injected), leather covered on a backing (usually plastic), or aluminum. Plastic or leather-covered luggage generally closes with a zipper. This luggage consists of suitcases that can be of various sizes and generally include wheels to facilitate movement. In particular, known aluminum luggage is composed of two half-shells formed from folded and riveted sheet metal. These half-shells are joined together by hinges. Such luggage opens and closes by pivoting one of the half-shells, for example, the upper half-shell, around the hinges. This luggage is also generally kept closed by means of closure devices, which may be lockable. Suitable means ensure the closed luggage is watertight.

[0003] The manufacturing and assembly techniques for sheet metal in known aluminum luggage involve overlapping layers of material and clearly visible rivets. To achieve an aesthetic result that breaks with this prior art, and in particular to obtain luggage with a clean and fluid appearance, free of visible rivets, and with improved perceived quality, the inventors have developed aluminum luggage primarily composed of two aluminum half-shells obtained by stamping. Another objective of the invention is to save labor, as stamping techniques are less time-consuming than riveting.

[0004] The present invention thus relates to luggage formed from half-shells of aluminium (or of another equivalent metal or alloy) in which said half-shells are obtained by stamping, with successive blows, the luggage according to the invention further comprising a curved frame fixed on the periphery of each half-shell and configured to allow the secure and watertight closure of said luggage, as well as the attachment of an inner lining. PRESENTATION OF THE INVENTION

[0005] More specifically, the invention relates to luggage comprising two metal half-shells, in particular made of aluminum or aluminum alloy, obtained by stamping, each half-shell being a single piece, having a bottom and a peripheral wall defining an internal volume, and a top edge corresponding to the peripheral edge of the peripheral wall, the top edge receiving a curved frame having a flat portion glued to an internal portion of the peripheral wall, near the top edge, the curved frame protruding beyond the top edge, upwards, that is to say in a direction opposite to the bottom.

[0006] Advantageously, the curved frame protrudes from the peripheral wall, laterally outwards, that is to say in a direction substantially orthogonal to the peripheral wall.

[0007] According to one embodiment, the curved frame glued to each half-shell has its two longitudinal edges curved around the entire perimeter of said curved frame, inwards, forming longitudinal grooves, and the luggage further comprising, for each curved frame, a profile, in particular made of plastic, inserted and clipped into said longitudinal grooves of each curved frame, inside each half-shell, around the entire perimeter of said curved frame, and a lining covering an internal surface of each half-shell, respectively sewn onto said profile clipped into the longitudinal grooves of the curved frame of each half-shell.

[0008] Advantageously, one of the grooves of each curved frame, on the bottom side of the corresponding half-shell, has a substantially L-shaped section, and the other groove has a substantially U-shaped section.

[0009] Advantageously, each curved frame includes a sealing groove in which an O-ring is housed, the O-ring being clipped and / or glued into said sealing groove.

[0010] According to one embodiment, at least one of the half-shells includes at least two wheel devices intended to be in contact with the ground and corner openings made, by cutting, in particular by laser cutting, at the level of at least two of the corners formed between the bottom and the peripheral wall, in particular to allow the insertion and fixing of the wheel devices.

[0011] According to one embodiment, the luggage includes angular interface elements, in particular made of plastic, arranged inside each half-shell at each corner opening, arranged so as to box in each half-shell, i.e. to close the corner openings, the angular interface elements including retaining means, in particular hollow threaded rods receiving screws, to allow the attachment of the wheel devices to said corresponding angular interface elements, the angular interface elements including flat portions forming tabs, and said angular interface elements being glued to a corresponding portion of the internal surface of the corresponding half-shell, in particular by means of double-sided adhesive strips.

[0012] Advantageously, the lining includes cutouts corresponding to the openings provided in each half-shell.

[0013] According to one embodiment, toothed spacers fixed, in particular clipped into the curved frame of each half-shell, and fixed, in particular screwed, to the peripheral wall of each half-shell, said spacers being configured to pinch the lining at the cutouts corresponding to the openings.

[0014] In particular, adhesive vibration absorption blocks, corresponding in particular to aluminum adhesive plates, can be glued to the internal surface of the bottoms of each half-shell.

[0015] According to one embodiment, each curved frame includes a groove adapted to form a volume adapted to receive excess glue when gluing said curved frame onto the peripheral wall of the corresponding half-shell. PRESENTATION OF THE FIGURES

[0016] The invention will be better understood upon reading the following description, given solely by way of example, and referring to the accompanying drawings given by way of non-limiting examples, in which identical references are given to similar objects and on which:

[0017] Fig. 1 is a schematic representation of luggage according to the invention;

[0018] Fig. 2 shows a stamped half-shell;

[0019] Figure 3 is a cross-sectional view of a piece of luggage according to the invention, showing the frames curved in section;

[0020] Figure 4 is a cross-sectional view of a piece of luggage according to the invention, showing the hinges in section;

[0021] Fig. 5 is a zoomed-in section view of the curved frames;

[0022] The [Fig.6] is a representation of a wheel mounting support, in section;

[0023] Fig. 7 shows a three-dimensional view of a wheel mounting bracket;

[0024] Figure 8 represents a portion of luggage showing adhesive strips for attach an interface element to a half-shell;

[0025] The [Fig.9] represents a lining;

[0026] Figure 10 shows a toothed spacer

[0027] Figure 11 shows a positioning spacer for a closing device and lockdown.

[0028] It should be noted that the figures set out the invention in detail to enable implementation of the invention; although not limiting, said figures serve in particular to better define the invention where appropriate. DETAILED DESCRIPTION OF THE INVENTION

[0029] The invention relates to a piece of metal luggage, in particular made of aluminum or aluminum alloy. The aluminum or aluminum alloy components used in the luggage according to the invention may preferably be anodized.

[0030] With reference to [Fig. 1], the luggage 100 comprises, in particular, two half-shells 1 assembled in a pivoting manner, each comprising a curved frame that comes against each other when the luggage is closed. Conventional closing and, where applicable, locking means are provided. The luggage 100 may also include wheels 6 to facilitate its movement.

[0031] According to the invention, each half-shell 1 is obtained by deep stamping of an aluminum sheet.

[0032] Deep drawing

[0033] The deep drawing process implemented includes in particular a plurality of successive strokes, associated with laser contouring, laser cutting to create the required openings, and bending to smooth edges corresponding to the cutouts of the openings.

[0034] In a standard manner, the deep drawing process implemented is defined as a process for shaping a sheet of metal. Deep drawing is based on deformations of the sheet, in tension and compression. During the process, a flat sheet of metal is drawn into a hollow part open on one side, or a deeper hollow part with a smaller cross-section.

[0035] In summary, to produce each half-shell 1, a desired final shape is defined and the steps to be carried out successively are determined, in particular the successive stamping operations. [Fig. 2] shows such a half-shell 1 in aluminum obtained by deep drawing.

[0036] A sheet of metal, particularly aluminum, is first roughly cut into an oval. An initial stamping creates a base. Subsequent stampings allow the desired half-shell shape to be obtained by bringing the material to the required areas, until a half-shell of the desired height is achieved.

[0037] The resulting half-shells 1 have a bottom 2 and a peripheral wall 3, as well as openings at all or part of the angles formed between the bottom and the peripheral wall.

[0038] The resulting half-shell 1 is laser-cut. Openings 43 can be made in all or part of the corners, particularly to allow the installation of wheels fixed to supports themselves attached to the half-shells at the openings. At the edges of the openings 43, a beveling operation is performed, folding the edges of the openings inwards, primarily to improve mechanical strength. Thanks to these folds, the protruding edges are oriented towards the interior of the luggage and will be covered and concealed by components interface (described below), also referred to as "supports" or "brackets", configured to seal the openings made in the half-shells, which, in addition to improving mechanical resistance, is favorable to aesthetics.

[0039] Depending on the openings 43 concerned, the interfacing elements perform different functions. In the corners, angular interfacing elements are provided, which form wheel mounting supports or corner supports, respectively allowing the luggage wheels to be fixed or aesthetically sealing openings made in corners. On the peripheral wall, the substantially rectangular openings are provided with mounting supports for closing and locking devices or hinge mounting supports, respectively allowing the luggage closing and locking devices to be fixed or hinges allowing the half-shells to be rotated relative to each other.

[0040] As is known, a "tulip effect" can occur due to the implementation of a stamping technique. As a result, the peripheral wall is neither perfectly flat nor perfectly perpendicular to the base. On the contrary, the peripheral wall has a curved, slightly parabolic cross-section, curving inwards towards the interior of the bag and then bending to follow an outward trajectory.

[0041] A curved frame is positioned on the upper edge of the peripheral wall, i.e., on the peripheral edge of the peripheral wall, thus partially compensating for this "tulip effect". The curved frame will be described in detail below.

[0042] According to an embodiment not shown, a zip-type closure means can be adapted, in particular fixed by gluing, on the perimeter of the curved frame, so as to allow the closing and opening of the luggage.

[0043] Stiffened organs

[0044] Optionally, one or more stiffening elements (not shown) may be provided, in the form of reinforcing bars which may be made of rigid plastic or aluminium, glued to the inside of the peripheral wall so as to stiffen it and make it flatter and more orthogonal to the bottom.

[0045] The interface components

[0046] Figures 6, 7 and 8, in particular, show interfacing elements. As briefly described above, the interfacing elements, also referred to as "brackets" by those skilled in the art, allow each half-shell to be "boxed in", that is to say, to fill the openings made in the half-shells 1. The angular interfacing elements 41, 42 allow in particular to close the openings made in the corners.

[0047] The angular interface members 41, 42 comprise flanges, in other words, flat portions forming tabs onto which are applied Double-sided adhesive strips 400 are used to attach the angular interface elements to the inside of the peripheral wall 3, i.e., to the sheet metal constituting each stamped half-shell 1. This is shown in [Fig. 7] in the case of an angular interface element forming a wheel mounting support 6. The angular interface element 41 then includes hollow cylinders 410 for screwing the wheels 6.

[0048] Openings are indeed necessary to fix wheel devices to the luggage 100. However, the choice to implement a stamping technique to produce the half-shells 1 implies providing wide openings, at least wider than in the case of half-shells in injected molded plastic, because, in the latter case, the volume occupied by the wheel devices is not obtained by making an opening in the molded half-shell, but corresponds to a volume with a bottom obtained by the shape of the mold used for the plastic injection.

[0049] The other interface elements, supports for fixing closure and locking devices or hinges, are in particular formed by columns, in other words threaded hollow tubes, in particular in stainless steel, attached and secured to the curved frame 10, 10', in which screws are screwed to fix said closure and locking devices 8 or said hinges 7, respectively.

[0050] Curved frame

[0051] The curved frame 10, 10' is shown in Figures 1, 3, 4, 5 and 8, its cross-section being particularly visible in [Fig. 5]. As previously mentioned, the curved frame 10, 10' is fitted over each half-shell 1. The curved frame 10, 10' comprises a flat portion which is bonded to a peripheral portion inside the half-shell 1, near the upper edge 4, i.e. the edge of the peripheral wall opposite the bottom of the half-shell. Preferably, the glued portion is located at a distance from the upper edge 4, for example approximately 5 mm, and, in this case, the curved frame 10, 10' includes a groove 14 preserving a volume between the curved frame 10, 10' and the peripheral wall 3, between the glued portion and the upper edge 4 of the half-shell 1. This groove 14 is adapted to receive the excess glue which is forced towards said groove 14 during the gluing of the curved frame 10, 10' to the half-shell 1.To achieve this bonding, the peripheral wall 3 is pressed onto the curved frame 10, 10', applying pressure progressing from bottom to top, i.e. from the part of the bonded portion located on the side of the bottom 2 and moving towards the upper edge 4, opposite the bottom.

[0052] The curved frame 10, 10' emerges beyond the upper edge 4, in a "vertical" direction, that is to say orthogonal to the bottom.

[0053] According to one embodiment, the curved frame 10, 10' also includes a lateral protrusion portion 15, i.e. forming a "bulge" vertically and offset outwards from the upper edge 4. Thus, the upper edge 4 abuts against the portion of the curved frame 10 with a lateral protrusion 15. This partially replicates the "tulip effect." The curved frame 10 is thus "thickened" to form this peripheral bead. The presence of this peripheral bead is particularly useful in the corners because, in these areas, the bead covers a generally imperfect interface zone between the half-shell 1 and the curved frame 10. In other words, this allows the manufacturing tolerances of the stamped half-shell 1 and the curved frame 10 to be met, especially in the corners.

[0054] Thus, the peripheral bead then makes it possible to cover a possible imprecise adjustment between the curved frame 10, 10' and the half-shell 1.

[0055] Alternatively, according to an embodiment not shown, the curved frame has no lateral protrusions. In this case, relative to the peripheral wall of each half-shell, the curved frame does not project outwards, but, on the contrary, is as perfectly flush as possible. According to this embodiment, the absence of a lateral protrusion improves the aesthetic appearance and facilitates the storage and handling of luggage, which is less bulky. The portion of the curved frame that emerges beyond the upper edge has an external face which, in this case, is substantially coplanar with respect to the peripheral wall for each half-shell.

[0056] The curved frame 10 also has edges that are folded towards each other, generally parallel, towards the inside of the half-shell, so as to form longitudinal grooves 11, 12 along each longitudinal edge of the curved frame. In particular, one longitudinal groove, 11 on the bottom side of the half-shell, has a substantially L-shaped cross-section, that is to say, having two main faces that are almost orthogonal, forming a slightly acute angle in the embodiment shown, and the other longitudinal groove 12 has a substantially U-shaped cross-section, that is to say, formed by a broken line with at least three faces forming almost right angles between successive faces, to create a kind of hollow rail.

[0057] Profile and lining

[0058] The luggage according to the invention further comprises a profile 20, in particular made of plastic, which clips into the grooves 11, 12 of the curved frame 10. A profile 20 is visible in [Fig. 5], clipped into one of the curved frames 10, 10', but a similar or identical profile is also arranged between the grooves 11, 12 of the other curved frame 10, 10'. A lining 30 intended to cover the inner surface of each half-shell is attached to said plastic profile, and the lining 30 is stitched into said profile 20, i.e., sewn, and / or glued.

[0059] Hinges, closing and locking devices and spacers

[0060] Hinges 7 are provided for pivoting the half-shells 1 together. In particular, the hinges 7 are three-axis hinges and comprise a base and two wings. Notably, the hinges 7 are internal, i.e., they do not protrude from the interior volume of the luggage 100 and are not visible from the outside when the luggage 100 is closed, thus improving the aesthetics and making the luggage 100 less bulky. An elastomer spacer may be placed between the hinges 7, in particular metallic ones, and the curved frame 10, itself metallic, to prevent metal-on-metal impacts when the half-shells 1 are pivoted.

[0061] Closure devices, and possibly locking devices, 8 of TSA type where appropriate, are also provided to allow the bag 100 to be kept in a closed position.

[0062] According to one embodiment, the plastic profile 20 and the lining 30 are cut in the regions where the hinges 7 and the closing and locking devices 8 are located, precisely to allow the attachment of said hinges 7 and said closing and locking devices 8 to the half-shells 1.

[0063] According to one embodiment, the luggage 100 according to the invention therefore comprises toothed spacers 51, 52, in particular made of injected plastic, shown in Figures 10, 10' and 11. The teeth of said spacers 51, 52 are configured to help hold the lining 30 (shown in [Fig. 9]) in position by pinching, particularly in areas where the profile 20 is cut out to accommodate the hinges 7 or the closure and locking devices 8 provided on the luggage 100. The teeth of the spacers 51, 52 thus prevent the lining 30 from slipping and consequently from concealing the unsightly elements such as the edges of the profile 20, the hinges 7, or the closure and locking devices 8.

[0064] In this case, the toothed spacers, visible in Figures 10 and 11, are engaged in a groove in the curved frame 10, 10', for example, secured by clipping. The lining, shown in isolation in [Fig. 9], sewn onto the profile clipped into the curved frame 10, 10', which encircles each half-shell 1, on the inside, near the upper edge of each half-shell 1, is pinched between said spacers 51, 52 and the inner surface of the peripheral wall 3. The pinching is achieved in particular by screwing the hinge 7, or the closing and locking device 8, into dedicated interface members. In particular, the interface members, forming hinge fixing supports, may consist of small columns that are integrated into the curved frame. For example, the lining is typically 2 mm thick and tightening, particularly by screwing screws into the columns, results in a center distance between the hinge base and the internal surface of the peripheral wall of the order of 0.5 mm.

[0065] At the level of the TSA-type closing and locking devices 8, spacers 52 of a particular shape are provided (see [Fig. 11]), with a slope to follow the lining which has a draft angle. These spacers 52 are screwed to bases of the closing and locking devices 8, for example of the TSA type.

[0066] Alternative embodiments

[0067] The angular interface members 41, 42 are made of plastic. In particular, the precise choice of material for each angular interface member 41, 42, its dimensions, thickness, cross-section, and the dimensions of the bonding portion are adapted to ensure a satisfactory assembly and to obtain appropriate mechanical reinforcement. The flat shape of the flanges corresponding to the bonding portions of the angular interface members 41, 42, in particular, is adapted to improve the diffusion of force in the event of an impact and to promote the adhesion of the glue or double-sided adhesive strips 400.

[0068] Preferably, all the interfacing elements are then covered by the lining 30.

[0069] The curved frames 10, 10' of each half-shell 1 differ from each other in that they have, all around their perimeter, parts of complementary section, intended to fit together in such a way as to ensure a precise positioning of the half-shells 1 relative to each other, so that the upper edges 4 of the respective peripheral walls 3 are well aligned, and so as to contribute to the sealing when the bag 100 is closed. These complementary section parts consist for example of a male part on a curved frame 10, 10' of one half-shell 1 and a female part on the curved frame 10, 10' of the other half-shell 1. On the embodiment shown in [Fig.5] in particular, a curved frame 10, 10' has, on a peripheral portion located opposite to the bottom, a peripheral hollow groove 16 having a V-shaped section.The other curved frame 10, 10', opposite, has a correspondingly protruding peripheral rib 17 with a V-shaped cross-section. The protruding peripheral rib 17 fits into the peripheral hollow groove 16 when the luggage is closed.

[0070] Furthermore, as can be seen in [Fig.5], the curved frames 10, 10', when placed opposite each other with the bag 100 closed, leave a peripheral passage at the interface between the two curved frames 10, 10', for a sealing gasket 9. One 10' of the curved frames has a peripheral sealing groove 13 for engaging a male protrusion of the O-ring 9.

[0071] The curved frame 10, 10' is obtained in particular by means of a special process adapted so that, in the corners, it has a variable radius adapted for maintain a constant width of the grooves, in particular the groove forming a hollow rail, with a section substantially in a U shape.

[0072] To this end, in particular, the bar intended to form the curved frame 10, 10', comprising a substantially L-shaped groove and a substantially U-shaped groove forming a rail, hollow along its entire length, is pressed so as to be curved, wedges being previously introduced into the hollow rail in order to guarantee the preservation of its width.

[0073] The curved frames 10, 10' can also undergo machining for dimensional and / or positioning adjustments.

[0074] Hollow and threaded columns, for example in stainless steel, can also be attached and secured to the curved frame 10, 10' to allow the fixing by screws of the hinges 7 in particular, and / or the closing and locking devices 8, where appropriate of the TSA type.

[0075] In particular, in a conventional manner, the hinges 7 comprise two wings mounted on a base to allow one half-shell to pivot relative to the other. The hinges 7 are fixed to the curved frame 10, 10' of each half-shell 1 by means of screws that secure their base to the curved frame 10, 10' by screwing into the posts. The screws may, for example, be tightened into nuts with square heads to reduce the risk of rotation loosening the screws during use of the luggage.

[0076] To reduce play and potentially noisy metal-on-metal contact, bushings and spacers, particularly made of elastomer, may also be provided to adapt the hinges to curved frames. These bushings and spacers are then interposed between the hinges 7 and the curved frame 10, 10'.

[0077] Aluminium plates fitted with adhesive strips, commonly referred to as "silent blocks" by those skilled in the art, in other words vibration-absorbing plates, can be placed against the internal surfaces of the half-shells, in various predefined locations, so as to absorb vibrations and thus reduce the noise emitted by the luggage when it is moved and subjected to shocks.

[0078] The sheet metal components of the half-shells 1 are made of aluminum alloy, for example, aluminum alloys with good strength and ductility characteristics, such as aluminum-magnesium alloys, in particular aluminum 5086. The half-shells 1 are also preferably anodized, configured to deposit an anodic layer suitable for improving resistance to corrosion, scratches, etc. The other metal components of the luggage are, for example, made of the same alloy, in particular the curved frames 10, 10'.

[0079] It should also be noted that the invention is not limited to the embodiments described above. It will indeed be apparent to a person skilled in the art that various modifications may be made to the implementations described above, in light of the teaching that has just been disclosed to him.

[0080] Reference signs:

[0081] 100: suitcase

[0082] 1: Stamped half-shell

[0083] 2: background

[0084] 3: peripheral wall

[0085] 4: upper edge

[0086] 10, 10': curved frame

[0087] 11: L-shaped groove

[0088] 12: U-shaped groove

[0089] 13: sealing groove

[0090] 14: groove (for excess glue)

[0091] 15: lateral protuberance (of the curved frame 10, 10')

[0092] 16: peripheral hollow rib (of the curved frame 10, 10')

[0093] 17: peripheral protruding rib (of the curved frame 10, 10')

[0094] 9: O-ring

[0095] 20: profile

[0096] 30: lining

[0097] 41: wheel mounting bracket

[0098] 410: hollow cylinder for screwing the wheels onto their mounting bracket

[0099] 6: wheel

[0100] 7: hinge

[0101] 8: closing and locking device

[0102] 42: corner support

[0103] 400: adhesive strip

[0104] 51: Hinge spacer

[0105] 52: spacer for closing and locking device

[0106] 43: openings in each stamped half-shell

Claims

Demands

1. Luggage (100) comprising two half-shells (1) of metal, in particular of aluminum or aluminum alloy, obtained by stamping, each half-shell (1) being one piece, having a bottom (2) and a peripheral wall (3) defining an internal volume, and an upper edge (4) corresponding to the peripheral edge of the peripheral wall (3), the upper edge (4) receiving a curved frame (10, 10') having a flat portion bonded to an internal portion of the peripheral wall (3), near the upper edge (4), the curved frame (10, 10') projecting beyond the upper edge, upwards, i.e. in a direction opposite to the bottom (2).

2. Luggage (100) according to claim 1, in which the curved frame (10, 10') protrudes from the peripheral wall (3), in a lateral protrusion (15) outwards, that is to say in a direction substantially orthogonal to the peripheral wall (3).

3. Luggage (100) according to claim 1 or 2, wherein the curved frame (10, 10') bonded to each half-shell (1) has its two longitudinal edges curved inwards around the entire circumference of said curved frame (10, 10'), forming longitudinal grooves (11, 12), and the luggage (100) further comprising, for each curved frame (10, 10'), a profile (20), in particular made of plastic, inserted and clipped into said longitudinal grooves (11, 12) of each curved frame (10, 10'), inside each half-shell (1), around the entire circumference of said curved frame (10, 10'), and a lining (30) covering an internal surface of each half-shell (1), respectively sewn onto said profile (20) clipped into the longitudinal grooves (11, 12) of the curved frame (10, 10') of each half-hull (1).

4. Luggage (100) according to any one of the preceding claims, wherein one of the grooves (11) of each curved frame (10, 10'), on the bottom side of the corresponding half-shell (1), has a substantially L-shaped cross-section, and the other groove (12) has a substantially U-shaped cross-section.

5. Luggage (100) according to any one of the preceding claims, wherein each curved frame (10, 10') includes a sealing groove (13) in which an O-ring (9) is housed, the O-ring (9) being clipped and / or glued into said sealing groove (13).

6. Luggage (100) according to any one of the preceding claims, wherein at least one of the half-shells (1) comprises at least two wheel devices (6) intended to be in contact with the ground and with corner openings made, by cutting, in particular by laser cutting, at the level of at least two of the corners formed between the bottom (2) and the peripheral wall (3), in particular to allow the insertion and fixing of the wheel devices (6).

7. Luggage (100) according to the preceding claim, comprising angular interfacing members (41, 42), in particular made of plastic, disposed inside each half-shell (1) at each corner opening, arranged so as to box in each half-shell (1), i.e. to close the corner openings, the angular interfacing members (41, 42) comprising retaining means, in particular hollow threaded rods receiving screws, to allow the attachment of the wheel devices (6) to said corresponding angular interfacing members (41), the angular interfacing members (41, 42) comprising flat portions forming tabs, and said angular interfacing members (41, 42) being glued to a corresponding portion of the internal surface of the corresponding half-shell (1), in particular by means of double-sided adhesive strips (400).

8. Luggage (100) according to any one of the preceding claims, wherein the lining (30) comprises cutouts corresponding to the openings provided in each half-shell (1).

9. Luggage (100) according to the preceding claim, further comprising toothed spacers (5) fixed, in particular clipped into the curved frame of each half-shell (1), and fixed, in particular screwed, to the peripheral wall (3) of each half-shell (1), said spacers (5) being configured to pinch the lining (30) at the cutouts corresponding to the openings.

10. Luggage (100) according to any one of the preceding claims, comprising adhesive vibration-absorbing blocks, corresponding in particular to aluminum adhesive plates, glued to the internal surface of the bottoms (2) of each half-hull (1).

11. Luggage (100) according to any one of the preceding claims, wherein each curved frame (10, 10') comprises a groove (14) adapted to form a volume suitable for receiving excess glue during the bonding of said curved frame (10, 10') on the peripheral wall (3) of the corresponding half-shell (1).

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